feat: migrate from Cedar to SpiceDB authorization system

This is a major architectural change that replaces the Cedar policy-based
authorization system with SpiceDB's relation-based authorization.

Key changes:

- Migrate from Rust to Go implementation
- Replace Cedar policies with SpiceDB schema and relationships
- Switch from envoy `ext_authz` with Cedar to SpiceDB permission checks
- Update build system and dependencies for Go ecosystem
- Maintain Envoy integration for external authorization

This change enables more flexible permission modeling through SpiceDB's
Google Zanzibar inspired relation-based system, supporting complex
hierarchical permissions that were difficult to express in Cedar.

Breaking change: Existing Cedar policies and Rust-based configuration
will no longer work and need to be migrated to SpiceDB schema.

1 files changed, 0 insertions, 22 deletions

diff --git a/vendor/hyper/src/client/mod.rs b/vendor/hyper/src/client/mod.rs
deleted file mode 100644
index 86e38973..00000000
--- a/vendor/hyper/src/client/mod.rs
+++ /dev/null
@@ -1,22 +0,0 @@
-//! HTTP Client
-//!
-//! hyper provides HTTP over a single connection. See the [`conn`] module.
-//!
-//! ## Examples
-//!
-//! * [`client`] - A simple CLI http client that requests the url passed in parameters and outputs the response content and details to the stdout, reading content chunk-by-chunk.
-//!
-//! * [`client_json`] - A simple program that GETs some json, reads the body asynchronously, parses it with serde and outputs the result.
-//!
-//! [`client`]: https://github.com/hyperium/hyper/blob/master/examples/client.rs
-//! [`client_json`]: https://github.com/hyperium/hyper/blob/master/examples/client_json.rs
-
-#[cfg(test)]
-mod tests;
-
-cfg_feature! {
-    #![any(feature = "http1", feature = "http2")]
-
-    pub mod conn;
-    pub(super) mod dispatch;
-}